package com.sky.service.impl;

import com.github.pagehelper.PageHelper;
import com.github.xiaoymin.knife4j.core.util.CommonUtils;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class SetmealServiceImpl implements SetmealService {


    @Autowired
    private SetmealMapper setmealMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;

    @Autowired
    private DishMapper  dishMapper;
    @Override
    public void save(SetmealDTO setmealDTO) {
        //新增套餐
        Setmeal setmeal=new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.insert(setmeal);
        //新增套餐和套餐菜单关系
        //获取新增的套餐id
        Long setmealId=setmeal.getId();
        //获取新增的套餐菜单关系
        Long id=setmeal.getId();
        List<SetmealDish> setmealDishes=setmealDTO.getSetmealDishes();
        for (SetmealDish setmealDish : setmealDishes){
            setmealDish.setSetmealId(setmealId);
        }
        setmealDishMapper.insertBatch(setmealDishes);
    }

    @Override
    public PageResult page(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(), setmealPageQueryDTO.getPageSize());
        List<SetmealVO> setmeals = setmealMapper.page(setmealPageQueryDTO);
        return new PageResult(setmeals.size(), setmeals);
    }

    @Override
    public void deleteBatch(List<Long> ids) {
        //起售的套餐不能删除
        for (Long id : ids){
            Setmeal setmeal=setmealMapper.selectById(id);
            if(setmeal.getStatus()== StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }
        ids.forEach(id -> {
            setmealMapper.deleteById(id);
            setmealDishMapper.deleteBySetmealId(id);
        });
    }

    @Override
    public SetmealVO getById(Long id) {
        Setmeal setmeal=setmealMapper.selectById(id);
        SetmealVO setmealVO=new SetmealVO();
        BeanUtils.copyProperties(setmeal, setmealVO);
        //获得套餐和菜品的关联关系
        List<SetmealDish> setmealDishes=setmealDishMapper.selectBySetmealId(id);
        setmealVO.setSetmealDishes(setmealDishes);
        return setmealVO;
    }

    @Override
    public void update(SetmealDTO setmealDTO) {
        Setmeal setmeal=new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        //1、修改套餐表，执行update
        setmealMapper.update(setmeal);
        //套餐id
        Long setmealId=setmeal.getId();
        //2、删除套餐和菜品的关联关系，操作setmeal_dish表，执行delete
        setmealDishMapper.deleteBySetmealId(setmealId);
        //3、重新插入套餐和菜品的关联关系，操作setmeal_dish表，执行insert
        List<SetmealDish> setmealDishes=setmealDTO.getSetmealDishes();
        for (SetmealDish setmealDish : setmealDishes){
            setmealDish.setSetmealId(setmealId);
        }
        setmealDishMapper.insertBatch(setmealDishes);
    }

    @Override
    public void updateStatus(Integer status, Long id) {
        //起售套餐时，判断套餐内是否有停售菜品，有停售菜品提示"套餐内包含未启售菜品，无法启售"
        if (status==StatusConstant.ENABLE){
            List<SetmealDish> setmealDishes=setmealDishMapper.selectBySetmealId(id);
            if (setmealDishes!=null&&setmealDishes.size()>0){
                setmealDishes.forEach(setmealDish -> {
                    Dish dish=dishMapper.selectById(setmealDish.getDishId());
                    if (dish.getStatus()==StatusConstant.DISABLE) {
                        throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ENABLE_FAILED);
                    }
                });
            }
        }
        Setmeal setmeal=Setmeal.builder()
                .id(id)
                .status(status)
                .build();
        setmealMapper.update(setmeal);
    }
    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}
